Open-Source Directory — Claude / Anthropic

Claude
Tools

A curated index of extensions, plugins, MCP servers, hooks, and integrations for Claude — discovered from GitHub and refreshed daily.

Repository Growth — Last 30 Days

8240entries
★ starsA–Z name

claudeCodeAssist

0
@phoxiao

A visual studio code extension that can manage sub-agent skills

updated Mar 2026

ClaudeCodeVisualStudio

0
@dhartman-bot

Visual Studio 2022 extension for Claude Code AI assistant

updated Dec 2025

TechgritClaudeCodeExtension

0
@rpanda-techgrit

A Visual Studio .NET extension that provides a better interface for Claude Code CLI, OpenAI Codex and Cursor Agent with support for multi-line prompts and image attachments for high productivity and vibe coding

updated Dec 2025

claude-code-extensions

0
@adereis

Reusable extensions for Claude Code: skills, agents, hooks, and scripts.

updated Jun 2026

replit-mcp-extension

0
@asem187

Replit MCP Extension for Claude Code - WebSocket bridge to connect AI agents with Replit

updated Dec 2025

openwebui-anthropic-pipe

0
@Radar105

Anthropic Claude pipe for Open WebUI with agentic tool execution via MCP

updated Feb 2026

AnthropicToolUseBuffer

0
@johnbrodowski

A C# implementation of asynchronous tool execution buffering for Anthropic's Claude API. This library enables **true parallel conversation and tool execution** - users can continue chatting while long-running tools execute in the background.

updated May 2026

anthropic-developer-relations-prototypes

0
@forgo

Prototypes and docs/tooling concepts to reduce friction in Anthropic's Claude + Claude Code onboarding, configuration, and responsible usage.

updated Dec 2025

feature-coder-extension

0
@joe-vest

VS Code extension that uses Claude Code (and OpenAI, optionally) to architect and build features in your codebase.

updated Dec 2025

agents-md-vscode-extension

0
@kamilio

Keeps `AGENTS.md` and `CLAUDE.md` aligned inside a workspace.

updated Jan 2026

react-annotator-chrome

0
@fisherjoey

Chrome extension for annotating React components on webpages for Claude Code

updated Jan 2026

oy-claude-extensions

0
@oy-zaksal58

올리브영 개발자를 위한 Claude Code 확장

updated Jan 2026

agp-marketplace

0
@adrianpuiu

Custom plugins marketplace for AGP's Claude Code extensions

updated Jan 2026

claude-code-extension

0
@RyanErkal
updated Jan 2026

ook-zed-extension

0
@mrw-droid

A Zed Agent Server extension that proxies ACP traffic over a websocket to an instrumented and sandboxed claude code.

updated Jun 2026

claude-code-tool-dev

0
@jpsweeney97

Monorepo for Claude Code extensions (skills, plugins, hooks)

updated Jul 2026

coding-agent-extension-builder

0
@takahirom

Kotlin library for generating coding agent (Claude Code, etc.) marketplace and plugins, etc. using Builder pattern to provide compile-time validation

updated Jan 2026

twitterblock

0
@whrobbins

Claude Code generated extension to block Twitter except for posting, notifications, and messaging.

updated Jan 2026

claude-experiments

0
@namick

Custom extensions and experiments for Claude Code

updated Jan 2026

Nyx_Dynamics_Claude_Code_Extensions

0
@Nyx-Dynamics

Proprietary Claude Code GitHub CLI integration commands

updated Jan 2026

claude-code-toolkit

0
@lucascerro

Skills and extensions for Claude Code

updated Jan 2026

claude-session-manager

0
@sethlazar

VS Code/Cursor extension to manage multiple Claude Code CLI sessions

updated Jan 2026

vscode-claude-usage-monitor

0
@barbidoux

VS Code extension for monitoring Claude Code usage metrics

updated Jan 2026

ClaudeCodeUsage-GnomeExtension

0
@xguitoux

Small extension to watch where you are in your token consumption

updated Jan 2026
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